204.137.0.0/21
🇺🇸CIDR
204.137.0.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇺🇸 United States
City
Kansas City (Downtown Kansas City)
RIR
ARIN
Status
allocated
Allocated
8/31/1994
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| This prefix is not currently announced in BGP. See covering prefix below. | ||||
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 204.137.0.0/22 | AS6077BCBSNE - Blue Cross Blue Shield of Nebraska | No ROA | — | 6/1/2026 |
| 204.137.4.0/22 | AS6077BCBSNE - Blue Cross Blue Shield of Nebraska | No ROA | — | 6/1/2026 |
Geolocation
Country🇺🇸United StatesUS
RegionMissouri
CityKansas City (Downtown Kansas City)
Coordinates39.1008, -94.5811 ↗
API
Open https://api.ipctl.io/v1/prefix/204.137.0.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/204.137.0.0/21" | jq
External Links